X = int(input())
if (400 <= X <=599):
  print("8")
elif (600 <= X <= 799):
  print("7")
elif (800 <= X <= 999):
  print("6")
elif (1000 <= X <= 1199):
  print("5")
elif (1200 <= X <= 1399):
  print("4")
elif (1400 <= X <= 1599):
  print("3")
elif (1600 <= X <= 1799):
  print("2")
elif (1800 <= X <= 1999):
  print("1") X = int(input()) X int(input()) int input() input if (400 <= X <=599):
  print("8")
elif (600 <= X <= 799):
  print("7")
elif (800 <= X <= 999):
  print("6")
elif (1000 <= X <= 1199):
  print("5")
elif (1200 <= X <= 1399):
  print("4")
elif (1400 <= X <= 1599):
  print("3")
elif (1600 <= X <= 1799):
  print("2")
elif (1800 <= X <= 1999):
  print("1") 400 <= X <=599 400 <= X 400 X 599 print("8") print "8" elif (600 <= X <= 799):
  print("7") 600 <= X <= 799 600 <= X 600 X 799 print("7") print "7" elif (800 <= X <= 999):
  print("6") 800 <= X <= 999 800 <= X 800 X 999 print("6") print "6" elif (1000 <= X <= 1199):
  print("5") 1000 <= X <= 1199 1000 <= X 1000 X 1199 print("5") print "5" elif (1200 <= X <= 1399):
  print("4") 1200 <= X <= 1399 1200 <= X 1200 X 1399 print("4") print "4" elif (1400 <= X <= 1599):
  print("3") 1400 <= X <= 1599 1400 <= X 1400 X 1599 print("3") print "3" elif (1600 <= X <= 1799):
  print("2") 1600 <= X <= 1799 1600 <= X 1600 X 1799 print("2") print "2" elif (1800 <= X <= 1999):
  print("1") 1800 <= X <= 1999 1800 <= X 1800 X 1999 print("1") print "1" X = int(input()) int(input()) X
X = int(input())
if (400 <= X <=599):
  print("8")
elif (600 <= X <= 799):
  print("7")
elif (800 <= X <= 999):
  print("6")
elif (1000 <= X <= 1199):
  print("5")
elif (1200 <= X <= 1399):
  print("4")
elif (1400 <= X <= 1599):
  print("3")
elif (1600 <= X <= 1799):
  print("2")
elif (1800 <= X <= 1999):
  print("1")